With Windows 10 & VS Code, You can use:
Install Composer global & see: https://github.com/FriendsOfPHP/PHP-CS-Fixer#installation
Add C:\Users{My Username}\AppData\Roaming\Composer\vendor\bin to PATH in System environment
Use config:
"php-cs-fixer.executablePath": "php-cs-fixer",
"php-cs-fixer.executablePathWindows": "php-cs-fixer.bat",